Calculating-machine.



C. W. GOOCH. CALCULATING MACHINE.

APPLIOATION FILED 33.24, 1914.

Patented Feb. 16, 1915.

4 SHEETS-SHEET l.

CALCULATING MACHINE. APPLICATION FILED I'll-13.24, 1914.

1, 1 2,6796 Patented Feb. 10, 1915.

4 SHEETS-SHEET 2.

Patented Feb. 16, 1915.

4 SHEETS-SHEET 3.

G. W. GOOGH.

CALCULATING MACHINE. APPLICATION FILED FEB. 24, 1914.

1,1 28,679" Patented Feb. 16, 1915.

4 SHEETS-SHEET 4.

UNITED STATES PATENT OFFICE.

CLAIBORNE W. GOOCH, OF DETROIT, MICHIGAN, ASSIGNOR T0 BURROUGHS ADDINGMACHINE COMPANY, 015

DETROIT, MICHIGAN. A

CORPORATION OF MICHIGAN.

CALCULATING-MACHINE.

To all whom it may concern: I

Be it known that I, CLAIBORNE W. GOOCH, a citizen of the United States,residing at Detroit, in the county of l'Vayne and State of Michigan,have invented certain new and useful Improvements inCalculating-Machines, of which the following is a description, referencebeing had to the accompanying drawings, forming part of cation.

I. have illustrated, and will describe, my invention as employed in thetype of calculating machine shown in the Horton Patent .No. 1,016,501,dated February 6, 1912, but as will be understood from the descriptionof it hereinafter given it is equally applicable to and may be embodiedin a wide variety of machines.

It relates primarily to the carrying or transfer mechanism between .thesuccessive numeral wheels of the machine, whereby when any given wheelcompletes a revolution the next higher wheel in the series is advancedone step or number; and it has for its object the provision ofsimplified and improved means for this purpose, whereby such transfer orcarry is invariably made with accuracy under all conditions ofoperations of the machine.

My novel carrying mechanism also lends itself to the provision of a verysimple and efficient means for clearing or zeroizing the numeral wheels,which constitutes a further feature of my invention.

In the accompanying drawings I have first illustrated my invention asoriginally embodied by me in a simple model, by means of which it maybemore readily and clearly explained, and have then illustrated it assubsequently embodied by me in a complete calculating machine of thetype of that men} tioned. I

Referring now to the "first mentioned drawings, Figure 1 representsa topplan view of two adjacent numeral-t wheels of a series of such wheels,and the carrying mechanism interposed between them, by means of which ateach revolution of the lower wheel the higher one is advanced one stepor number; Fig. 2 an elevation of the. right side of the same parts;Fig. 3 an'elevation of the Specification of Letters Patent.

this specifi ing with a smaller Patented Feb. 16, 1915. Serial No.saaeso.

left side thereof; Fig. 4 a front elevation; Fig. 5 a vertical sectionin the plane of the dotted line 55 of Fig. 1, looking toward the rightor lower numeral wheel and with the latter in its zero position; Fig. 6a corresponding view with the numeral wheel in its 9 position; Fig. 7 avertical section in the plane of the dotted line 77 of Fig. 1, lookingtoward the right or lower numeral wheel; Fig. 8 a vertical section inthe same plane looking toward the left; Fig. 9 a vertical section in theplane of line 99 of Fig. 1, being a section through the rim of thesecond numeral wheel, and also looking toward the right; and Fig. 9 anaxial section through the numeral wheels and carrying devices of thepreceding views.

Referring first to Fig. 1 of A represents the lower one of two adjacentnumeral wheels of a series, B the higher one, and C an intermediateinternal gear wheel hereinafter described. Located immediately at theright of each of the numeral wheels is an external gear wheel, thatbeside the lower numeral wheel being designated A and that beside thehigher numeral wheel B. The former of these two gear wheels, A, is bestshown in Fig. 2, where it will be seen meshgear wheel E beneath it, bywhich it is driven from the actuating mechanism of the machine. Thelarge gear wheels A B correspond to the gear wheels L of the Hortonpatent heretofore referred to, and the small gear wheels E to the gearwheels I of that patent.

he gear wheel A carries a planet gear D, Figs. 2 and 9 which meshes uponits inner side with a sun-gear E. In the case of the lowest ordernumeral wheelthe wheel A in the present instance-the sun-gear E issecured in fixed position, so that the planet-gear D travels around itsperiphery as the gear wheel A is turned. The planet gear D is ofsufiicient width to mesh not only with the sun-gear E at its inner side,as shown in Figs. 2 and 9*, but at its outer side with an internal gearF formed upon the numeral wheel A immediately at the left of the gearwheel A, with the result th t as the gear wheel A is turned by thedriving mechanism of the machine, and the planetgear 1) caused to travelaround the fixed sungear E, the rotation of the planet gear D upon itsown axis will serve to advance the numeral wheel A.

' The planetary gearing just described is the same as that in the Hortonpatent, the planet gear D corresponding to the planet gear M of thatpatent, the sun-gear E to the sun-gear M and the internal gear F of thenumeral wheel to the internal gears N of the numeral wheels of thatpatent.

Fast upon the left side of the numeral wheel A is a snail-cam G, Figs.5, 6 and 9 which cooperates with and serves to retract a spring-pressedcarrying-lever H hung. at its rear end upon a rod I, and havingconnected to its front end the upper end of a coiled, spring J whoselower end is secured to a cross rod K. About midway of its length thelever H is provided with a short armor lug H projecting to the rightfrom the body of the lever and overlying and resting upon the cam G,Figs. 1 to 6, with the result that as the numeral wheel A is turned fromits zero position, shown in Fig. 5, the cam G will ride under theprojecting arm or lug of'the lever H and lift the lever to or toward theposition shown in Fig. 6, where the numeral wheel and cam are shown intheir 9 position. As the wheel is turned on farther, past its zeroposition, the tail ofthe cam will be carried from under the lever H andthe spring J will thereupon retract the lever to or toward the positionshown in Fig. 5 again.

. v Mounted upon the axial supporting shaft of the train of numeralwheels, at the left of the cam G and in the present instance inapproximately the same vertical plane as the lever H, is a gear-carryinglever L whose front end is connected by a link M to the "lever H, thelink, M being pivotally connected at its opposite end to the respectivelevers L and H. At its opposite end the lever L carries a pair ofplanet-gears Nand 0 upon its opposite sides, said gears being secured tothe opposite ends of a short stub shaft journaled in the lever L, Fig. 9The planet gear O meshes with .a sun-gear P fast uponithe left-hand sideof the cam G, which in turn is fastened to the left side of the numeralwheel A, so that all three of said parts P, G and A turn together, whilethe planet-gear N on the left side of the lever L meshes with theinternal gear of the wheel 0 heretofore referred to, as best shown inFigs. 7 and 9.

It results from the foregoing construction that each time the lever H islifted by the cam G the gear-carrying lever L will be rocked on itsfulcrum and its gear 0 caused to travel downward and forward around thesunear P carried by the numeral wheel A, rom the position of Fig. 5

to or toward that of Fig. 6. This will cause the planet-gear O, andconsequently the planet-gear N, to turn upon their own axis in aclockwise direction, during such movement of the levers H and L producedby the lifting movement of the cam G, and the gear vN will roll idlyforward upon the internal gear of the wheel C, Fig. 7, without turningthe latter. When, however, the numeral wheel A completes a revolution,and the tail of thecam G is carried from under ,the 7Q lever H and thespring J retracts said lever, and with it the lever L, swinging thelower end of the latter rearward and upward from thefposition shown inFig. 6 to or toward that shown in Fig. 5, the internal gear wheel C willbe turned in a clockwise direction by the planet-gear N.

If we assume that the numeral wheel A has been turned to exactly zeroposition (instead of beyond such position) at the operation which hascaused the cam to release the lever H and permit the parts to beretracted by the spring J, in the manner just described, the numeralwheel, and consequently its sun-gear stationary during such retractionof the parts and such return of the gear-carrying lever L from theposition of Fig. 6 to that of Fig. 5. The result, under such conditions,will be that the planet-gears O and N will be rotated upon their ownaxis, and in a clockwise direction, during such return movement of thelever L; and the gear N,- being in mesh with the internal gear of thewheel C, will consequently turn said wheel in a like direction. Theproportions of the parts are such, in the present instance, that suchfull movement of the gear-carrying lever L from the position of Fig. 6to that of Fig. 5 will cause the internal gear wheel C to be turnedforward or in a clockwise direction onefifth of a revolution, and suchmovement of the gear wheel C will be transmitted to the numeral wheel Band serve to advance the latter one step or number, as

hereinafter explained.

If we now assume an operation in which the lower order numeral wheel Ais carried beyond zero position at one continuous movement-for instanceits 5 position by the addition of 8 upon it at any given operation ofthe machinethe operation and result of the carrying mechanism will be asfollows: WVhen the tail of the cam Gr clears the upon the lever H, asthe numeral wheel A passes zero position, and releases the lever, thespring J will retract the lever H and the gear-carrying lever L towardnormal position as before, A is being turned slowly the resultingoperation will not be substantially different from that beforedescribed. But if'the numeral P, will be at rest and 90 from its 7position to pro ection H and ifthe numeral wheel wheel (and consequentlyits cam G) are being turned very rapidly at such time the lower portionof the rise of the cam, succeeding its higher portion or tail, may olferan obstruction to the complete return movement of the parts to theirnormal position shown in Fig. 5, and prevent complete return of them tothat position. Nevertheless, under such circumstances, the internalgearwheel C will be advanced a full one-fifth of a revolution, asbefore, and an accurate transfer or carry be effected. This is due tothe fact that if/the numeral wheel is turned beyond zero position at anygiven operation its sun-gear P will continue to turn with it from zeroposition to the point at which it comes to rest, and during suchcontinued movement of the wheel and sun-gear beyond normal position thesun-gear will act upon and rotate the planetary gears O and N carried bythe lever L. Now, at such time (i. 6., during the movement of thenumeral wheel and sun-gear beyond zero position) the spring J willbe-returning the gear-carrying lever L toward normal POSltIOD, and theclockwise movement given to the planet gears by such return movement ofthe parts will be supplemented and accelerated by the like movementtransmitted to said gears by the sun-gear of the numeral wheel. in otherwords, the planet-gears carried by the lever L will be turned in aclockwise direction both by the return movement of the lever L towardnormal position (as they are when the numeral wheel and sun-gear are atrest during the return movement of the parts) and also by the continuedrotation of the numeral wheel and sun-gear beyond their zero position,with the result that any incompleteness in the return movement ofthegear-carrying lever L will be compensated for by the additional movementgiven the planet-gears by the rotatingsun-gear, so that the internalgear wheel C-will, under all circumstances and conditions, beturnedforward the same distance, in this instance onefifth of arevolution, at each release and retraction of the levers H and L.

The internal gear wheel C is provided upon its left side with anextended hub or sleeve G, Figs. 1, 4, 7 and 9 upon whose left-hand endis formed or secured a sungear E with which meshes the planet gear Dcarried by the gear wheel B associated with the numeral wheel B, Figs.8, 9 and 9*, such sun-gear corresponding to gears M of the Hortonpatent, and the planet-gear D corresponding to the planetgears M of thatpatent, as heretofore explained in connection with the sun-gear E andplanet-gear D of the present construction. The planet-gear D not onlymeshes at its inner side with the sungear E, but at its outer side withthe the suninternal gear F ofthe numeral wheel B, Figs. 3, 8, 9 and 9with the result that at each one-fifth of a revolution of the gear wheelC and its sun-gear E in a clock Wise direction (anti-clockwise in Fig.8) the numeral wheel B will be turned one-tenth of a revolution in theopposite direction, to register the transfer or carry from the numeralwheel A, the sun-gear E in the present instance having one-half as manyteeth is the internal gear of the numeral wheel B,

lf it be assumed that the numeral Wheel B and its associated gear wheelB are at rest at the time the above-described transfer or carry takesplace, the operation will simply be that the turning of the sun-gear Ein a clockwise direction (anti-clockwise in Fig. 8) through one-fifth ofa revolution will turn the planet gear D in the opposite direction uponits own axis, and such rotation of the planet gear upon its own axiswill cause it to turn the numeral wheel B in the same direction, theproportions of the gearing being such that the one-fifth of a revolutionof the sun-gear E, thus transmitted through the planet gear D to thenumeral wheel B, will turn the latter one-tenth of a revolution, asbefore stated.

The above described actuation of the gear wheel B and numeral wheel B bythe sungear E, through the medium of the planet gear D, to effect thetransfer or carry from the numeral Wheel A, is the same as in the Hortonpatent heretofore referred to, as is also the operation of efiectingsuch a transfer or carry to the numeral wheel B at a time when thelatter and its associated gear wheel B are being directly turned by theactuating mechanism of the machine under the impulse of an operated keyin the row or series corresponding to such wheel. Under such conditionsthe movement transmitted to the gear wheel B and numeral wheel Bdirectly from the actuating mechanism of the machine will besupplemented by the movement transmitted to them from the sungear E, sothat the numeral wheel will be turned one step farther than it wouldhave been turned by the direct action of the actuating mechanism of themachine, and thus the transfer or carry will be effected notwithstandingthe fact that the numeral Wheel B is itself in motion at the time thenumeral wheel A completes a revolution and releases the spring-pressedlevers of the carrying mechanism to effect a transferall as in themechanism of the Horton patent I tationof the parts. A stop S engagingthe teeth of the gear wheel B of the numeral wheel B, Figs. 3 and 1, isalso present in the model from which the foregoing illustrations weremade, for the purpose of holding the gear wheel B, from rotation. ln theactual machine in which the mechanism is incorporated no such stop ispresent, since each of such gear wheels is in gear with the rack orsector of its corresponding actuating device, and is held at rest bysuch device excepting when the latter is itself moved by the operationof a key in the corresponding row or series.

In Figs. 10,11 and 12 1 have shown a slightly modified construction ofthe carrying mechanism heretofore described, operating upon the sameprinciple and in substantially the same manner, the same letters ofreference being applied to the parts in these additional views whichcorrespond in function to those illustrated in the preceding views.Referring to Figs. 11 and 12, it will be seen that there is mounted uponthe cross-rod 1 beneath the numeral wheels a lever H in the form of arocking sector arm upon its upper edge concentric with the pivot orfulcrum of the lever. This lever H corresponds in purpose and functionwith the lever H of the previously described construction, and the gearteeth upon its upper edge mesh with the corresponding gear teeth formedupon the lower end of a gearcarrying lever L corresponding to thegearcarrying lever L of the previously described construction, and, likethe latter, carrying upon its opposite sides a pair of planet gears Nand 0, such gears being secured to the opposite ends of a short shaftjournaled in the lever L. As in the previously described construction,the planet gear meshes with a sun-gear P fast upon the hub of the lowernumeral wheel A, while the planet gear N engages the internal gear ofthe Wheel C located between the numeral wheels A and B.

'lhe sector-shaped lever H is provided at the opposite sides or cornersof its upper end with short projecting arms a and b, to the former ofwhich is connected the retracting spring J for the lever, and the latterof which is bent laterally to the right or toward the numeral wheel A,Fig. 10, and cooperates with a snail cam G fast upon the hub of saidwheel. In Fig. 11 the wheel A is shown in its zero position, and thelever H retracted to the left to its limit of movement; while in Fig. 12the wheel A is shown in its 9 position, in which position the cam G hasforced the lever H to the left, against the resistance of its retractingspring J, through approximately nine-tenths ofits full limit ofmovement. As the numeral wheel A is turned on to zero position, from theposition shown in Fig. 12, the tail of or plate having a series of gearteeth formed operate with the cam G will be carried out of the path ofthe laterally bent arm b'of the lever H and the latter will be retractedto or toward the position of Fig. 11 by the spring J.

As will be understood from the foregoing description, at each advance ofthe numeral wheel A from zero position the gear-carrying lever L isswung in one direction by the cam G, and as the wheel completes arevolution the lever is released and retracted to or toward normalposition by the spring J, as in the case of the construction previouslydescribed. During such movements of the lever L its planet gears O and Nwill cooperate with the sun-gear P and with the internal gear of thewheel C, respectively, as in Figs. 5, 6 and 7 of the previouslydescribed construction, and with the same result. That is to say, ateach of such actuations of the gear-carrying lever L (in one directionby the cam Ur. and in the other by the spring J) the internal gear wheelC will be turned one-fifth of a revolution in a clockwise directionandthis whether the numeral wheel A comes to rest in zero position, so thatthe levers H and L are retracted fully to normal position by the springJ, or is turned beyond zero position and turned so rapidly that the camG may be interposed in the path of the arm of the lever H before thelatter and the lever L are retracted completely to normal position, andtherefore prevent complete return of them to such position, as explainedin connection with the previously described construction.

The hub of the internal gear wheel G carries at its left-hand end asun-gear corresponding to the sun-gear E of the previously describedconstruction, Fig. 8, and cooperating in the same manner with a planetgear carried by the gear wheel B associated with the numeral wheel B andengaging the internal gear upon the latter wheel, as in Fig. 9. r

The upper end of the arm a of the lever H is shaped to form a stopsurface to coa corresponding surface formed upon the gearcarrying leverL, at the end of the movement of the latter to the left (just as thetail of the cam G clears the laterally-bent end of the arm 6 at theopposite or forward corner of the lever 11,) and thereby prevent anyoverthrow of the lever L in the direction in which it is moved by thecam G. In the opposite position of the parts, Fig. 11, the forward sideof the lower end of the lever L cooperates as a stop surface with therear side of the arm Z) of the lever H, and prevents any overthrow ofthe lever L in the opposite direction.

In the two models from which the drawings thus far described were made,a numeral wheel corresponding to those employed in the machine of theHorton patent racy under all conditions was utilizedfor the higher orderwheel as a matter of convenience, and has accordingly been shown in thedrawings made from said models; but in the full-sized completecalculating machines in which I have embodied my invention the numeralwheels are all like the right-hand or lower order numeral wheel of thedrawings, as hereinafter shown and described in connection with theillustrations of such full-sized machine. Y

As will be understood from the foregoing description, I have provided,in the two slightly differing constructions illustrated and described, avery simple and efficient carrying mechanism, by means of which thecomplete revolution of a lower order numeral wheel will cause the nexthigher wheel in theseries to be advanced one step or number, and thiswhether such higher order wheel be 'at the time in motion, under thedirect operation of the actuating mech anism of the machine, or be atrest,'with the result that the transfer or carry from one numeral wheelto the next higher in the series will be invariably effected with accuofoperation.

Having illustrated and described the principle and mode of operation ofmy novel carrying mechanism, and the details of its construction asembodied in simple illustrative models, I will now proceed to anillustration and description of it as I have embodied it in completefullsized commercial calculating machines, where it is associated withthe various mechanisms of such ma.- chine, and in connection with whichthe method of clearing the numeral wheels or resetting them to zeroposition will be explained.

In the additional views of'the drawings to be now referred to, Fig. 13represents a top plan View of a part of the forward portion of acalculating machine embodying my present invention, with theinclosing-casing removed; Fig. 14 a View partly in section (see dottedline 1-114) and partly in side elevation of the right side or theportion of the machine, with part of the framework broken away to exposethe parts beyond it; Fig. 15 a vertical section through the same portionof the machine at the left of one of the numeral wheels, (see dottedline 15-15) looking toward the their normal position of rest and thenumeral wheels at zero; and Fig. 16 a corresponding view with theclearing or zeroizing handle pulled forward to its limit of movement andthe parts moved by it in corresponding position.

By reference to Fig. 13, the numeral wheels corresponding to the wheelsA and B of Figs. 1 to 12, their associated gear wheels corresponding tothe gear wheels A, B, and the interposed internal gear left, with theparts in.

wheels 0, will be readily identified. In the particular machine hereillustrated there is one of the internal gear wheels C secured in fixedposition at the right of the lowest order numeral wheel, Fig. 13, but itperforms no function as a gear wheel and is present merely as aconvenientmeans of providing the fixed sun-gear E, Fig. it, which issecured to or formed upon the lefthand end of its hub and cooperateswith the planet gear D carried by the gear wheel A of the lowest ordernumeral wheel A, as in Fig. 2.

The cam-actuated and spring-retracted levers H of Figs. 1 to 9 will.also be readily identified in Figs. 13 to 16, where it will be seen thattheir front ends, to which the retracting springs J are connected,project over or into the path. of, and are suitably shaped to be engagedby, a cross-rod T extending from side to side of the machine in front ofthe numeral wheels. This crossrod is secured and supported, at severalpoints intermediate of its length, in the up per -.ends of approximatelyvertical arms U, Figs. 14, 15 and 16, whose lower ends are slotted andengaged by a cross-rod V extending from side to side of the machine andsecured in and carried by a series of arms W fast upon and projectingforwardly and downwardly from a rock shaft X which is journaled at itsopposite ends in the side frames of the machine. At each clearing orzeroizing operation of the machine the shaft X is rocked in a directionto swing the front ends of the arms W and the crossrod V carried by themupward from the position shown in Figs. 14 and 15 to that shown in Fig.16, and to consequently lift the cross-rod T, with the result that allof the-carrying-levers H will be picked up by said cross-rod T, inwhatever position they may be resting, and be lifted to the positionshown in Fig. 16. This lifting of the levers H will of course lift thefront ends of the gear-carrying levers L, and swing their rear endsdownward and forward, as in Figs. 5 and 6. During such downward andforward movement of the rear ends of the levers L, Figs. 15 and 16, theplanet gears N carried by them will travel upon the internal gears ofthe wheels C as fixed racks, and each planet gear N be consequentlvrotated upon its own axis in a clockwise direction, Figs. 5 and 6, (inthe reverse direction, Figs. 15 and 16.) This rotation of the planetgear N upon its own axis will rotate the planet gear 0 in the samedirection, and as the planet gear 0 is in mesh with the sun-gear P uponthe hub of the next lower numeral wheel the result will be that suchrotation of the planet gears N and O in one direction upon their ownaxes will serve to rotate the lower order numeral wheel in a reversedirection. The

proportions of the parts and the extent of upward movement given thelevers H by the cross-rod T when the latter is lifted from the positionof Figs. 14 and 15 to that of Fig. 16 are such that all of the numeralwheels (excepting the units wheel, herelnafter referred to), will beturned to the1r "9 positions, as in Fig. 16, and this regardless of thepositions in which they may have been standing at the beginning of thecanceling operation and upward movement of the cross-rod T, since thelatter will simply pick up the carrying levers H, wherever it comes incontact with their front ends. and carry them on upward with it to itslimit of movement.

The carrying lever H located between the first and second numeral wheelsat the right is lifted one step higher, at each of the operations-abovedescribed, than are the carrying levers H located-between the succeedingwheels at the left, with the result that the lowest order numeral wheel,instead ofbeing turned only to its 9 position, as are the other wheels,Fig. 16, will be turned on to zero position. Its cam G will be thereforecarried beyond and out of the path of the lateral projection upon thelever H, as

in Figs. 5 and 15, while the cams G of all the succeeding wheels to theleft will stand in the position shown inFigs. 6 and 16, with theirhighest portions beneath the pro- .jections upon the levers H. Itresults from this provision that when the cross-rod T, by which thelevers H have been lifted, is lowered all the levers H excepting thatlocated between the first and second numeral wheels will be temporarilyarrested, in their downward movement. by engagement with theirrespectivecams G, whereas the lever H located between the first and second numeralwheels will be free to descend (being retracted by its spring J) withthe cross-rod T. This retraction of this particular lever H in advanceof the retraction of the succeeding levers at the left of it will causethe internal gear C located between the first and second numeral wheelsto be turned forward one fifth of a revolution, in the manner heretoforeexplained, and such turning of said wheel will cause the next succeedingnumeral wheel at its left to be turned rearward one-tenth of arevolution, as also heretofore explained, and thereby carry such wheelfrom its 9 to its'zero position. Such movement of the second numeralwheel from 9 to zero position will cause its cam G to release thecarrying lever H at its left. whereupon said lever will immediately beretracted by its spring J and the internal gear wheel C at the left ofsuch lever will be given one-fifth of a revolution, and such movement ofthat internal gear wheel will be transmitted to the next succeedingnumeral wheel at-the left and'serve to advance it from its 9 to zeroposition;

and so on in succession through the entire series of wheels, all of thembeing brought to zero position at the end of the operation. The extraone step upward movement of the right-hand carrying lever H, heretoforementioned, may be efiected by making the cross-rod T thicker, orsurrounding it with v a sleeve, at the point at which it engages suchlever H, as indicated in Figs. 13 to 18. The cross-rod T is guided inits vertical FIB movements in curved slots 0 formed in the upper forwardportions of division plates Y of the frame of the machine, and securedin the extreme upper ends of the upwardly extending arms of such plates,in rear of the slots referred to, is a cross-rod Z which operates asastop rod for the levers H and prevents any excessive upward movement ofthem when they are lifted by the crossrod T. The upper surface of therighthand lever H is notched where it engages the rod Z, or otherprovision made, to permit said lever to be moved one step higher thanthe other levers.

The rock shaft X has secured to its righthand end, Fig. 14:, adownwardly tnd'rearvwardly projecting arm X to whose lower end isconnected the front end of a link X whose rear end is connected to theupper end of an arm Y projecting upwardly from a rock-shaft Y journaledin the side frame in Fig. 16, it will serve to rock the shaft X andswing upward the arms W and the cross-rod V carried thereby, from thepositron of- Figs. 14 and 15 to that of Fig. 16,

and that when released a suitably applied spring Z shall restore theposition.

The cross rod V carried by the arms W, in addition to performing thefunction of lifting the arms U which carry the cross-rod parts to normalT, extends through cam-shaped slots to formed in the lower ends of aseriesof levers U which are hung at their upper ends on a fixedcross-rod V and have rearwardly extending integral or otherwise rigidarms U which project between the respective internal gear wheels Candthe immediately adjacent numeral wheels at their left, Fig. 13,therebeing one of these levers for each one of said internal gear wheelsCf Each of said wheels is provided upon its left side with fiveequidistant stop pins 6, Fig. 13, and the extreme rear ends ment of thecross-rod V with the lower of the arms U of the levers U are bentlaterally toward the right into position to cooperate with the pins uponthe respective wheels C. In the normal position of parts the rear endsof the levers stand below the path of travel of the pins 0 on the wheelsC, Figs. 14 and 15, but when a clearing or zeroizing operation takesplace, and the shaft X is rocked to swing upward its arm 1V and theparts carried and to be lifted thereby, the upward travel of thecross-rod V in the cam slots 02 in the lower ends of the levers U willthrow the upper rear ends of the arms U of the latter into the path ofthe pins 6 on the wheels C, as shown in Fig. 16, and serve to preventany backward rotation of the wheels C, 2'. e. rotation in a clockwisedirection as the parts are viewed in Figs. l4, l5 and 16. Inasmuch asthis is the direction in which the wheels C tend to rotate, or to berotated by the planet gears X, when the carrying levers H are lifted bythe cross-rod T, it follows, as heretofore explained, that the wheels Care held stationary atsuch times and their internal gears operate asfixed racks, upon which the planet gears N travel forward and by whichsaid planet gears are rotated upon their own axes, and thereby caused torotate the numeral wheels of the next succeeding lower orders. IVhen theoperating handle by means of which the shaft X has been rocked and itsarms W swung upward is released, and said shaft and arms are swungdownward to normal position again, the engageportions of the cam slotsin the levers U will restore the latter to their normal position andwithdraw their stop arms from the path of the pins on the wheels 0. Theshape of the cam slots 00 in the levers U is such that the stop arms arethrown into the path of the pins e upon the wheels C near the beginningof the clearing operation and withdrawn therefrom near the end of it,and the slotted engagement of the lower ends of the arms U with thecross-rod V is provided for the purpose of permitting slight upwardmovement of the rod V, to operate the cam levers U, before the rodbegins to lift the arms U, cross-rod T and any of the levers H.

The cam levers U may also be utilized to operate over-throw-preventingstop-arms for the numeral wheels, such arms cooperat-ing for thatpurpose with studs or pins upon said wheels when the zeroizing handle ispulled forward quickly or violently to its limit of movement, but as theclearing mechanism which I have illustrated and described is operativewithout such overthrow-preventing means, and as means for such purposeis illustrated and described in the Horton patent heretofore referredhave not thought it necessary to coming column-actuators A the wheels Cplicate the drawings and specification of the present application withan illustration and description of such provision.

In the machine illustrated in the drawings, Figs. 13 to 16, theindividual numeral wheels may be operated by the correspondof themachine in the same manner and by the same means as in the machine ofthe Horton patent, the racks B of such column-actuators meshing withpinions C fast upon the right-hand sides of internal ratchets D Figs. 18and 14, said internal ratchets being engaged by spring-pressed pawls(not shown) carried by the pinions or gear wheels E located immediatelyat the left of such ratchets, Figs. 13 and 11 and meshing with the gearwheels A, B, etc., of the respective numeral wheels, Figs. 2 to ll.Under such construction, during the downward movement of anycolumn-actuator the pinion or gear wheel associated with thecorresponding numeral wheel remains at rest, and 'during the upwardmovement of the column-actuator it is turned (always in the samedirection) to an extent determined by the previous downward movement ofthe actuator, and transmits its movement to the corresponding numeralwheel, as in the machine of the Horton patent. the same provision maylikewise be made in the present instance as in the machine of the ortonpatent for normally locking the numeral wheel gears from movement, andfor individually unlocking them when their correspondingcolumn-actuators are operated, and for collectively unlocking them ateach Substantially I clearing or zeroizing operation. Thus the latterunlocking may be accomplished by a cross-rod W carried by the arms Wprojecting from the rock shaft X, Figs. 1416, which cross rod engagesthe depending arms of the locking dogs whenever the shaft X is rockedand the arms W swung upward, and forces said depending arms of thelocking dogs forward and swings the locking ends of theirrea-rwardly-extending arms downward out of engagement with the lookingwheels carried by or turning with the intermediate gears E as in Fig.16, and as more fully shown and described in the Horton patent. In thepresent instance, however, the construction and operation of all thelocking dogs are the same, Whereas in the Horton patent a specialconstruction of locking dog for the units wheel is provided, which isunnecessary here.

lVhile I have referred, descriptively, to as internal gears, it will beunderstood that they are, mechanically and functionally, the universegears of the respective sets of planetary gears of which they form apart, and that other forms of universe gears might be substituted forthem.

.I claim:-

1. In a carrying mechanism for calculating machines and the'like, thecombination, with two adjacent numeral wheels, of an oscillatinggear-carrier interposed between said wheels and moved in one directionby the turning of the lower order wheel, and a gear carried by saidcarrier and in gear with both of said wheels.

2-. In a carrying mechanism for calculating machines and the like, thecombination, with two adjacent numeral wheels, of a cam turning with thelower one of said wheels,

an oscillating gear-carrier moved in one (31- rection by said cam, and agear carried by said carrier and in gear with both of said wheels.

3. In a carrying mechanism for calculatmg machines and the like, thecombination, with two adjacent numeral wheels, ofa cam turning with thelower one of said wheels, a spring-retracted lever moved in onedirection by said cam, an oscillating gear-carrier connected with andmoved by said lever, and a gear carried by said carrier and in gear withboth of the numeral wheels.

4. In a carrying mechanism for calculatmg machines and the like, thecombination, with two adjacent numeral wheels, of a cam and gear turningwith the lower one of said wheels, an oscillating gear-carrier moved inone direction by said cam, and a pair of gears carried by saidgear-carrier and turning together, one of said gears being in mesh withthe gear turning with the lower order numeral wheel and the other ingear with the higher order numeral wheel.

5. In a carrying mechanism for calculat ing machines and the like, thecombination,

with two adjacent numeral wheels, of a camand gear turning with thelower one of said wheels, a spring-retracted lever moved in onedirection by said cam, an oscillating gear-carrier connected with andmoved by said lever, and a pair of gears carried by said gear-carrierand turning together, one of said gears being in mesh with the gearturning with'the lower order. numeral wheel and the other in gear withthe higher order numeral wheel.

6. In a carrying mechanism for calculating machines and the like, thecombination, with a numeral wheel, and a sun-gear turning with it, of anoscillating gear-carrier mounted upon the axis of said sun-gear andmoved in one direction by the turning of the numeral wheel, and a planetgear carried by said gear-carrier in mesh with said sun-gear and also ingear with the next higher order numeral wheel.

'7. In a carrying mechanism for calculat- I ing machines and the like,the combination,

with a numeral wheel, and a cam and sungear turning with said wheel, ofan oscillating gear-carrier mounted on the axis of the sun-gear andmoved in onedirection by said cam, and a planet gear carried by saidgearcarrier in mesh with the sun-"gear and also with a numeral wheel,and a cam and sungear turning with said wheel, of a springretractedlever moved in one directionby said cam, an oscillating gear-carrierconnected to and moved by said lever, and a planet gear carried by saidcarrier in mesh wigththe sun-gear and also-in gear with the next higherorder numeral wheel.

9. In a carrying mechanism for calculating machines and the like, thecombination, with a numeral wheel and a wheel adapted to beintermittently advanced by said numeral wheel, of a sun-gear and aninternal gear, one of said gears turning with the numeral wheel and theother with the. other wheel, a planet gear interposed between andengaging the sun-gear and the internal gear, and means for oscillatingsaid planet gear about the was of the sun-gear and internal ear. g 10.In a carrying mechanism for calculating machines and the like, thecombination,

planet gear in the opposite direction aboutthe axis of said gear.

'11. In a carrying mechanism forealculating machines and the like, thecombination, with a numeral wheel and a Wheel intermittently advanced bysaid numeral wheel, of a sun-gear and an internal gear, one ofsaid gearsturning with the numeral wheel and the other with theintermittently-advanced wheel, a planet gear interposed between andengaging said sun-gear and internal gear, a cam turning with the numeralwheel and operating to oscillate the planet gear in one direction aboutthe axis of the sun-gear and internal gear, and a spring for oscillatingthe planet gear in the opposite direction.

12. In a carrying mechanism for calculating machines and the like, thecombination, with a numeral wheel and a wheel intermittently advanced bysaid numeral wheel, of a sun-gear and an internal gear, one turning withthe numeral wheel and the other with the intermittentlyadvanced wheel, aspring-retracted lever, a cam turning with the numeral wheel andoperating said to move said lever in one direction, an oscillatinggear-carrier connected to and moved by said lever, and a planet gearcarried by said gear-carrier and interposed between and engaging thesun-gear and internaLgear.

13. In a carrying mechanism for calculating. machines and the like, thecombination, with a numeral wheel and a sun-gear turning with it, of aninternal gear intermittently advanced by the numeral wheel, a planetgear interposed between and engaging said sun-gear and internal gear,and means for oscillating said planet gear about the axis of saidsun-gear and internal gear.

14. In a carrying mechanism for calculating machines and the like, thecombination, with a numeral wheel and a sun-gear turning with it, of aninternal gear intermittently advanced by the numeral wheel, a planetgear interposed between and engaging sun-gear and internal gear, meansfor causing the turning of the numeral wheel to oscillate said planetgear in one direction about the axis of the sun-gear and internal gear,and independent means for oscillating it in the opposite direction.

15. In a carrying mechanism for calculating machines and the like, thecombination, with a numeral wheel and a sun-gear turning with it, of aninternal gear intermittently advanced by the numeral wheel, a planetgear interposed between and engaging said sun-gear and internal gear, acam turning with the numeral wheel and operated to oscillate the planetgear in one direction about the axis of the sun-gear and internal gear,and a spring for oscillating it in the opposite direction.

6 In a carrying mechanism for calculating machines and the like, thecombination, with a numeral wheel and a sun-gear turning with it, of aninternal gear inter Y mittently advanced by the numeral wheel, a

spring-retracted lever, a cam turning with the numeral wheel andoperating to move said lever in one direction, an oscillatinggear-carrier connected with and moved by said lever, and a planet gearcarried by said gear-carrier and interposed between said sun-gear andinternal gear.

17. In a carrying mechanism for calculating machines and the like, thecombination, with a numeral wheel and a wheel adapted to beintermittently advanced by said numeral wheel, of a planetary gearinginterposed between said wheels, and means for causing the turning of thenumeral wheel to oscillate one element of said planetary gearingtointermittently advance the other wheel. j

' 18. In a carrying mechanism for calcu-.

lating machines and the like, the combination, with 'two adjacentnumeral wheels and .an interposed wheel adapted to be intermitment ofthe tently advance said interposed wheel, and a cillating adapted tentlyadvanced by the lower order numeral wheel, of planetary gearing betweenthe lower order wheel and said interposed wheel, means for causing theturning of the lower order wheel to oscillate one eleplanetary'gearingto intermitsecond planetary gearing between said interposed wheel andthe higher order numeral wheel.

19. In a carrying mechanism for calculating machines and the like, thecombination, with two adjacent numeral wheels, of an interposed wheeladapted to be intermittently advanced by the lower order numeral wheel,a sun-gear and an internal gear, one turning with the lower ordernumeral wheel and the other with said interposed wheel, a planet gearinterposed between and engagingsaid sun-gear and internal gear, meansfor causing the turning of the lower order numeral wheel to oscillatesaid planet gear about the "axis of the sun-gear and internal gear, tointermittently advance said interposed wheel, and a planetary gearingconnecting said interposed wheel with the higher order numeral aninterposed internal gear wheel, a sungear turning with the, numeralwheel, a planet gear interposed between and engaging said sun-gear andthe internal gear, means for causing the turning of the lower ordernumeral wheel to oscillate said planet gear about the axis ofthe'sun-gear and internal gear, to intermittently advance the latter,and a planetary gearing connecting the internal gear wheel with thehigher order numeral wheel.

21. In a carrying mechanism for calculating machines and the like, thecombination, with two adjacent numeral wheels, of an interposed internalgear wheel, a sungear turning with the lower order numeral wheel, aspring-retracted lever, a cam turning with the" lower order numeralwheel for moving said lever in one direction, an osgear-carrierconnected with and moved by said lever, a planet gear carried by saidgear-carrier and engaging said sungear and internal gear, andplanetarygearing connecting said internal gear wheel with the higherorder numeral wheel.

22. In a carrying mechanism for calculating machines and the like, thecombination with a numeral wheel and a wheel to be intermittentlyadvanced by said numeral wheel, of a planetary gearing interposedbetweensaid wheels, means-for causing the turning of the numeral wheel tooscillate one element of said planetary gearing to intermittentlyadvance the other wheel, a higher order numeral wheel, a planetarygearing connecting the intermittently-advanced wheel with said higherorgearing.

' said numeral wheel, of a sun-gear and internal gear, one of said gearsturning with 23. In a carrylng mechanism for calculating machinesandvthe like, the combina tion, with a numeral wheel and a wheel adaptedto be intermittently advanced by said numeral wheel, of a planetarygearing interposed between said wheels, means for causing the turning ofthe numeral wheel to oscillate one element of said planetary gearing tointermittently advance the other wheel, a sun-gear turned by saidintermittently-advanced wheel, a higher order numeral wheel, anactuating gear therefor, and a planet gear carried by said actuatinggear and in gear with both the sun-gear and the higher order numeralwheel.

24:. Ina carrying mechanism for calculating machines and the like, thecombination, with a numeral wheel and a wheel adapted to beintermittently advanced by an the numeral wheel and the other with theintermittently-advanced wheel, a planet gear interposed between andengaging the sun-gear and the internal gear, means for causing theturning of the'numeral wheel to oscillate said planet gear about theaxis of the sun-gear and internal gear, a higher order numeral wheel, aplanetary gearing interposed between said intermittently-advanced wheeland said higher order numeral wheel, and an actuating gear for thehigher order numeral wheel carrying one of the. gears of said planetarygearing.

25. In a carrying mechanism for calculating machines and the like, thecombination, with a numeral wheel and a wheel intermittently advanced bysaid numeral wheel, of a sun-gear and an internal gear, one turning withthe numeral wheel and the other with the intermittently-advanced wheel,a spring-retracted lever, a cam turning with the numeralwheel andoperating to move said lever in one direction, an oscillatinggear-carrier connected to and moved by said lever, a p anet-gear carriedby saidgear-carrier and interposed between the sun-gear and internalgear, a higher order numeral wheel, a planetary gearing connecting theintermittently-advanced wheel with said higher order numeral wheel, andan actuating gear for the higher order wheel carrying one of the gearsof said planetary gearing.

26. In a carrying mechanism for calcu lating machines and the like, thecombination, with a numeral wheel and a sun-gear turning with it, of aninternal gear intermittently advanced by the numeral wheel, a planetgear interposed between and engaging said sun-gear and internal gear,means for causing the turning of the numeral wheel to oscillate saidplanet gearabout the axis of said sun-gear and internal gear, a higherorder numeral wheel, a planetary gearing connecting said internal gearwith said higher order numeral wheel, and an actuating gear for thehigher order numeral wheel carrying one of the gears of said planetarygearing.

27. In a carrying mechanism for calculating machines and the like, thecombination, with a numeral wheel and a'sun-gear turning with it, of aninternal gear intermittently advanced by the numeral wheel, aspring-retracted lever, a cam turning with the numeral wheel andoperating to move said lever in one direction, an oscillatinggear-carrier connected with and moved by said lever, a planet gearcarried by said gear-carrier and interposed between said sun-gear andinternal gear, a higher order 'numeral wheel, a planetarygearingconnecting said internal gear with said higher for said higher orderwheel carrying one of the gears of said planetary gearing.

28. In a carrying mechanism for calcuorder numeral wheel, and anactuating gear lating machines and the like, the combina- 7 tion, with anumeral wheel and a wheel adapted to be intermittently advanced by i thenumeral wheel, of a planetary gearing interposed between said wheels,means for causing the turning of the numeral wheel to oscillate oneelement of said planetary gear ing to intermittently advance the otherwheel, a sun-gear turning with the intermittently-advanced wheel,ahigher order numeral wheel, an actuating gear therefor,

and a-planet gear carried by said actuating gear with boththe sun-gearand gear and in the higher order wheel.

29. In a carrying mechanism for calculating machines and the like, thecombination, with a numeral wheel and a sun-gear turning with it, of aninternal gear intermittently advanced by the numeral wheel, aspring-retracted lever, a cam turning with the numeral wheel andoperating to move said lever in one direction, an oscillatinggear-carrier connected with and moved by said lever, a planet gearcarried by said gear-carrier and interposed between said sun-gear andinternal gear, a sun-gear turning with the internalgear, a higher order7 numeral Wheel, an actuating gear for said *higher order wheel; and aplanet gear carried' by said actuating gear and in gear with both thesun-gear and the higher order ,wheel.

30. In a clearing or zeroizing mechanism for calculating machines andthe'like, the

' combination of a numeral wlieel, a set of for calculating planetarygears connected therewith, one of said gears turning with the numeralwheel, and means for holding another one of said planetary gearsstationary while moving the third one of said gears about the axis ofthe gear turning with the numeral wheel.

31. In a clearing or zeroizing mechanism machines and the like, thecombination of a numeral wheel, a sun-gear and an internal gear, one ofthem turning with the numeral wheel and the other adapted to be heldfrom movement during the zeroizing operation, a planet gear interposedbetween the sun-gear and internal gear, and means for moving the planetgear about the axis of the sun gear and internal gear while one of thelatter is held stationary and the other permitted to turn with the Inumeral wheel.

32. In a clearing or zeroizing mechanism for calculating machines andthe like, the combination of a numeral wheel, a sun-gear turning withsaid wheel, an internal gear adapted to be held from movement during thezeroizing operation, a planet gear interposed between the sun-gear andinternal gear, and means for moving said planet gear about the axis ofthe sun-gear and internal gear while holding the latter-from movementand permitting the sun-gear to turn with the numeral Wheel.

33. Ina clearing or zeroizing mechanism for calculating machines and thelike, the combination of-a numeral wheel, a sun-gear and an internalgear, one of said gears turn ing with the numeral wheel and the otheradapted to be held from movement during the zeroizing operation, anoscillating gearcarrier mounted upon the axis of the sungear andinternal gear, a planet gear carried by said gear-carrier and in meshwith both the sun-gear and the internal gear, and means for oscillatingsaid gear-carrier about the axis ofthe sun-gear and internal gear whileone of them is held stationary and the other permitted to turn with thenumeral wheel.

34. In a clearing or zeroizing mechanism for calculating machines andthe like, the combination of a numeral wheel, a sun-gear and an internalgear. one of said gears turning with the numeral wheel and the otheradapted to, be held from movement during the zero zing, operation, aspring-retracted lever, an oscillating gear-carrier connected with andmoved by said lever, a planet gear carried by said gear-carrier andmeshing withboth the sun-gear and internal and means for moving saidlever to oscillate the gear-carrier while one of the first-mentionedgears is held from movement and the otlllier permitted to turn with thenumeral w eel.

, 35. In a clearing or zeroizing mechanism for calculating machines andthe like, the

gear,

combination of a numeral wheel, a sun-gear turning With said wheel, aninternal'gear adapted to be held from movement during the zeroizingoperation, an oscillating gearcarrier hung upon the axis of the sun-gearand internal gear, a planet gear carried by said gear-carrier and inmesh with both the sun-gear and the internal gear, and means foroscillating said gear-carrier about the axis of the sun-gear andinternal gear while holding the internal from movement and leaving thesun-gear free to turn with the numeral Wheel.

36. In a clearing or zeroizing mechanism for calculating machines andthe like, the combination of a numeral wheel, a sungear turning withsaid wheel, an internal gear adapted to be held from movement during thezeroizing operation, a spring-retracted lever, an oscillatinggear-carrier connected to and moved by said lever, a planet gear carriedby said gear-carrier and in mesh with both the sun-gear and the internalgear, and means for moving said lever to oscillate the gear-carrierabout the axis of the sun-gear and internal gear while holding thelatter stationary and permitting the sun-gear to turn with thenumeral'wheel.

37. In a clearing or zeroizing mechanism for calculating machines andthe like, the combination of a numeral wheel, a sun-gear and an internalgear, one of them turning with the numeral wheel and the other adaptedto be held from movement during the zeroizing operation, a cam alsoturning with the numeral wheel, an oscillating gear-carrier hung uponthe axis of the sun-gear and internal gear and cooperating with saidcam,

a planet gear carried by said gear-carrier and meshing with both thesun-gear and the internal gear, and means independent of the cam formoving the oscillating gear-carrier 7 while one of the first-mentionedgears is held stationary and the other permited to turn with the numeralwheel.

38. In a clearing or zeroizing mechanism for calculating machines andthe like, the

,tion while holding one of the first-mentioned gears stationary andpermitting the other to turn with the numeral wheel.

'39. In a clearing or zeroizing mechanism for calculating machines andthe like, the

combination of a numeral wheel, a cam and sun-gear turning with saidwheel, an internal gear adapted to be held from movement during thezeroizing operation, a sprmgretracted lever cooperating with said cam,

an oscillating gear-carrierv connected to and moved by said lever, aplanet gear carried by said gear-carrier and engaging the sungear andthe internal gear, and means independent of the cam for moving saidlever to oscillate the gear-carrier about the axis of the sun-gear andinternal gear while holding the latter stationary and permitting thesun-gear to turn with the numeral wheel.

40. In a clearing or zeroizing mechanism for calculating machines andthe like, the combination of a plurality of numeral wheels, a pluralityof sets of planetary gears,

one connected with each numeral wheel and one gear of each set turningwith its associated numeral wheel, and means common to all of saidnumeral wheels for holding a second one of the gears of each setstationary while moving the third about the axis of the gear'turningwith its associated numeral wheel.

41. In a clearing or zeroizing mechanism for calculating machines andthe like, the

combination of a pluralitv of numeral.

wheels, a sun-gear and an internal gear associated with each numeralwheel, one of them turning with the numeral wheel andthe other adaptedto be held from, movement during the zeroizing operation, a plurality ofplanet gears, one associated with each numeral wheel and meshing withthe sungear and the internal gear associated with that wheel, and meanscommon to all of the planet gears for moving them about the axis each ofsaid wheels, the sun gear turning of the sun-gears and internal gearswhile holdingone of'the latter set of gears stationary and permittingthe other to turn with the respective numeral wheels.

-' 42. In a clearing or zeroizing mechanism for calculating machinesandathe like, the" combination of a plurality of numeral wheels,asun-gear and an nternal gear for I for calculating machines and thelike, the

combination of a plurality of numeral Wheels, a sun-gear and aninternal. gear associated with each of said wheels, one of said gearsturning with the numeral wheel and the other adapted to be held frommovement during the zeroizing operation, a plurality of oscillatinggear-carriers, one for each numeral wheel, mounted upon the axis of thesun-gears and internal gears, a plurality of planetary gears carried bysaid gear-carriers and interposed between the respective sungears andinternal gears, and means common to all of said gear-carriers foroscillating them about the axis of the sun-gears and internal gearswhile one of the latter sets of gears is held stationary and the otherpermitted to turn with the numeral wheels.

44. In aclearing or zeroizing mechanism for calculating machines and thelike, the combination of a plurality of numeral wheels, a sun-gear andan internal gear associated with each numeral wheel, one of said gearsturning with the numeral wheel and the other adapted to be held frommovement during the zeroizing operation, a plurality of cams turningwith the respective numeral wheels, a plurality of springretractedlevers cooperating with said cams, a plurality of oscillatinggear-carriers .connected with and moved by the respective levers, aplanet gear carried by each of said carriers and interposed between thesun gear and internal gearpf the adjacent numeral wheel, and meanscommon to all of said levers for moving them in unison to oscillate thegear-carriers while one of the first-mentioned set of gears is held frommovement and the other permitted to turn with thenumeral wheels.

45. In a clearing or zeroizing mechanism for calculating machines andthe like, the combination of a plurality of numeral wheels, a sun-gearand a cam associated with each numeral wheel and turning-with it, an

internal gear associated with each sun-gear and adapted to he held frommovement during the zeroizing operation, a spring-retract- I ed leverand an oscillating gear-carrier associated with each numeral wheel andits gear and cam, said gear-carrier being con nected to and moved by thelever, a planet gear carried by each gear-carrier and interposed betweenthe adjacent sun-gear and internal gear, and means common to all of thelevers for moving them in unison to oscillate the planet gears about theaxis of the sun-gear and internal gears while holding the latter frommovement and permitting the sun-gears' to turn with the numeral wheels.

- 46. In a combined carrying and zeroizing mechanism for calculatingmachines andthe like, the combination of a numeral wheel, a set ofplanetary gears connected therewith, one of said gears turning with thenumeral wheel, means for causing the turning of the numeral wheel tooscillate another one of said planetary gears about the axis of the gearturning with the numeral wheel, and means independent of the numeralwheel for oscillating said gear about the axis of the gear turning withthe numeral wheel while holding the third gear of the set of planetarygears from movement.

47. In a combined carrying and zeroizing mechanism for calculatingmachines and the like, the combination of a numeral wheel, a sun gearand an internal gear, one of them turning with the numeral wheel, aplanet gear interposed between the sun-gear and internal gear, means forcausing the turning of the numeral wheel to oscillate the planet gearabout the axis of thesun-gear and internal gear, and means independentof the numeral wheel for oscillating said planet gear about the axis ofthe sun-gear and internal gear while holding one of said gearsstationary and permitting the other to turn with the numeral wheel.

48. In a combined carrying and zeroizing mechanism for calculatingmachines and the like, the combination of a numeral wheel, a sun-gearturning with said wheel, an internal gear associated with said Wheel, aplanet gear interposed between the sungear and internal gear, means forcausing the turning of the numeral wheel to oscillate the planet gearabout the axis of the sun-gear and internal gear, and means independentof the numeral wheel for oscillating the planet gear about the axis ofthe sungear and internal gear whileholding the latter from movement andpermitting the sun- 7 tioned gears stationary and permitting the otherto turn.with the numeral wheel.

50. In a combined carrying and Zeroizing mechanism for calculatingmachines and the like, the combination of a numeral wheel, a sun-gearand an internal gear associated with said wheel, one of said gearsturning with said Wheel, acam also turning with said wheel, anoscillating gear-carrier hung upon the axis of said sun-gear andinternal gear and cooperating with said cam, a planet gear carried bysaid carrier and'interposed between the sun-gear and internal gear, andmeans independent of the cam for oscillating'the gear-carrier whileholding one of the first-mentioned gears stationary and permitting theother to turn with the numeral wheel.- v c 51. In a combined carryingandzeroizing mechanism for calculating machines and the like, thecombination of a numeral wheel, a sun-gear and a cam turning with saidwheel, an internal gear associated with said wheel, a spring-retractedlever cooperating with said cam, an' oscillating gear-carrier connectedto and moved. by said lever, a planet gear carried by said carrier andinterposed between the sun-gear and internal gear, and means independentof the cam for moving said lever to oscillate the gear-carrier whileholding the internal gear from movement and permitting the sun-gear toturn with the numeral wheel.

52. In a combined carrying and zeroizing mechanism for calculatingmachines and the like, the combination of a plurality of numeral wheels,a sun-gear and an internal gear associated with each of said wheels andone of said gears turning with the wheel, a planet gear interposedbetween the sun-gear and internal gear, means for causing the turning ofeach numeral wheel to oscillate the planet gear about the axis of itsassociated sun-gear and internal gear, and means common to all of theplanet gears for oscillating the planet gears about the axis of thesun-gears and internal gears while holding one of the latter set ofgears stationary and permitting the other to turn with the numeralwheels.

53. In a combined carrying and zeroizing mechanism for calculatingmachines and the like, the combination of a pluralitypf numeral wheels,a sun-gear turning with each wheel, an internal gear associated with 7each wheel, a planet gear interposed between each sun-gear and internalgear, means for causing the turning of the numeral wheel to oscillatethe planet gear about the axis of the sun-gear and-internal gear, andmeans common to all of the planet Jgears for oscillating them about theaxis of the sun-gears and internal gears while holding the latterstationary and permitting the sun-gears to turn with the numeral wheels.54. In a combined carrying and zeroizmg mechanism for calculatingmachines and the like, the combination of a plurality of numeral wheels,a sun-gear and cam turning with each numeral wheel, an internal gearassociated witheach numeral wheel, an oscillating gear-carrier likewiseassociated with each numeral wheel and cooperating with the cam turningtherewith, a planet gear carried by each gear-carrier and interposedbetween the adjacent sun-gear and 1nternal gear, and means common to allof the gear carriers for oscillating them about the axis of thesun-gears and internal gears While holding the latter stationary andpermitting the" sun-gears to turn with the numeral wheels.

55. In a combined carrying and zeroizing mechanism for calculatingmachines and the like, the combination of a plurality of nunected to andmoved by said lever, a planet gear carried by each gear-carrier andinterposed between the adjacent sun-gear and 10 internal gear, and meanscommon to all of the levers for moving them in unison to oscillate thegear-carriers while holding the internal gears from movement and permitting the sun-gears to turn with the numera wheels.

CLAIBORNE W. GOOGH.

Witnesses:

R. S. MIELERT, R. W. FAmomm.

